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I would like to make something with gears, but not sure what.
Three of the gears I've cut from sheet metal (thirteen in total) and
some I've modeled.
Comments welcome:
Stephen S
Post a reply to this message
Attachments:
Download 'gears.png' (578 KB)
Download 'gear_test0000.png' (33 KB)
Preview of image 'gears.png'
Preview of image 'gear_test0000.png'
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On 17-12-2018 4:54, StephenS wrote:
> I would like to make something with gears, but not sure what.
>
> Three of the gears I've cut from sheet metal (thirteen in total) and
> some I've modeled.
>
>
> Comments welcome:
>
> Stephen S
An Aztec Calendar is what I would attempt.
--
Thomas
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On 17/12/2018 03:54, StephenS wrote:
> I would like to make something with gears, but not sure what.
>
Is that in the real world you want to do it?
> Three of the gears I've cut from sheet metal (thirteen in total) and
> some I've modelled.
>
>
What restrictions do you have in the physical world? Could you make the
gears fine enough to make a clock?
My first thought is an orrery, which could be a clock as well.
https://www.instructables.com/id/Orrery-a-Mechanical-Solar-System-Model-From-Plywoo/
Would you want it to be practical or decorative?
I can see why you are asking for comments. Ideas are not easy to come by.
Great project.
> Comments welcome:
>
> Stephen S
--
Regards
Stephen
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On 2018-12-17 2:25 a.m., Thomas de Groot wrote:
...
> An Aztec Calendar is what I would attempt.
>
Add to list for research ...
Stephen S
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On 2018-12-17 2:28 a.m., Stephen wrote:
...
> Is that in the real world you want to do it?
Yes
...
> What restrictions do you have in the physical world? Could you make the
> gears fine enough to make a clock?
...Clock gears would be to fine, or the project would have to be to big.
The industrial equipment being used is more for power than detail. Drop
off material I have to work with is under 1 foot square each.
Stephen S
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On 17-12-2018 12:41, StephenS wrote:
> On 2018-12-17 2:25 a.m., Thomas de Groot wrote:
> ...
>> An Aztec Calendar is what I would attempt.
>>
>
> Add to list for research ...
>
>
I had some site info a while back about a gear construct of the
calendar, but somehow the site disappeared or was renamed. I shall look
further...
--
Thomas
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On 17/12/2018 11:47, StephenS wrote:
> On 2018-12-17 2:28 a.m., Stephen wrote:
> ....
>> Is that in the real world you want to do it?
> Yes
> ....
>> What restrictions do you have in the physical world? Could you make
>> the gears fine enough to make a clock?
> ....Clock gears would be to fine, or the project would have to be to big.
Are you sure?
https://www.youtube.com/watch?v=V1lHo8lGhWg
The centrepiece for any workshop
>
> The industrial equipment being used is more for power than detail. Drop
> off material I have to work with is under 1 foot square each.
>
You are talking to someone who thinks a 0 ba spanner is a bit on the
hefty side.
I can't stop thinking about clocks now.
--
Regards
Stephen
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hi,
StephenS <nom### [at] nomail com> wrote:
> I would like to make something with gears, but not sure what.
> Three of the gears I've cut from sheet metal (thirteen in total) and
> some I've modeled.
(and, you wrote, you have access to further cut offs)
> Comments welcome:
I've always liked mobiles and such, so I'll suggest some kind of "kinetic art"
sculpture/structure/arrangement.
regards, jr.
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in news:5c171de9@news.povray.org StephenS wrote:
> I would like to make something with gears, but not sure what.
>
http://americanhistory.si.edu/collections/search/object/nmah_998869
ingo
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in news:XnsA9BBA7F6DCCF4seed7@news.povray.org ingo wrote:
> in news:5c171de9@news.povray.org StephenS wrote:
>
>> I would like to make something with gears, but not sure what.
>>
>
> http://americanhistory.si.edu/collections/search/object/nmah_998869
>
> ingo
>
http://americanhistory.si.edu/collections/search/object/nmah_861150
search the site for patent model,
ingo
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StephenS <nom### [at] nomailcom> wrote:
> I would like to make something with gears, but not sure what.
>
> Three of the gears I've cut from sheet metal (thirteen in total) and
> some I've modeled.
Nice - good to see you've worked out the undercut on the small gear :)
Clock
http://www.woodenclocks.co.uk/
Orrery
Antikythera mechanism
Search for Lego videos
centrifuge
thread/rope bobbin winder
apple peeler
hand / foot powered generator
hand drill / egg beater
cider press
pump
winch
cycloid drawing machine / Spirograph / harmonograph
knitting machine
https://www.google.com/search?q=creelman++knitting
paper / sheet metal corrugator
I'm thinking thee's gotta be a pantograph type drawing tool that uses geared
armatures
http://507movements.com/
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On 17/12/2018 19:07, Bald Eagle wrote:
> Antikythera mechanism
Literally LOL.
There is a word for people like you. :P
--
Regards
Stephen
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Stephen <mca### [at] aolcom> wrote:
> On 17/12/2018 19:07, Bald Eagle wrote:
> > Antikythera mechanism
>
> Literally LOL.
>
> There is a word for people like you. :P
It's probably in Scottish. :D
He should still totally do it :)
https://www.youtube.com/channel/UCworsKCR-Sx6R6-BnIjS2MA
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On 2018-12-16 10:54 p.m., StephenS wrote:
...
> Three of the gears I've cut from sheet metal (thirteen in total) and
> some I've modeled.
I'll need to wait for more material to show up.
I think I should start with something easier, planetary gears (epicyclic
gears). Then work my way up to something with more parts.
The gears are generated from a web site,
http://hessmer.org/gears/InvoluteSpurGearBuilder.html
I download the .dxf file, feed it into the Plasma Cutter, grind some of
the rough edges.
I model a gear tooth, from the .dxf file, into a prism{}.
Stephen S
Post a reply to this message
Attachments:
Download 'gear_pic_.png' (1127 KB)
Preview of image 'gear_pic_.png'
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On 2018-12-17 2:25 a.m., Thomas de Groot wrote:
...
> An Aztec Calendar is what I would attempt.
>
The calendar looks like two rings that slide on each other, or am I
seeing it wrong? Gears in stone?
Stephen S
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On 2018-12-17 9:13 a.m., jr wrote:
...
> I've always liked mobiles and such, so I'll suggest some kind of "kinetic art"
> sculpture/structure/arrangement.
...Small arrangement to start I think.
Stephen S
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On 2018-12-17 10:30 a.m., ingo wrote:
...
> http://americanhistory.si.edu/collections/search/object/nmah_998869
>
> ingo
>
More gears and less other things to start I think.
Stephen S
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On 2018-12-17 2:07 p.m., Bald Eagle wrote:
...
> Nice - good to see you've worked out the undercut on the small gear :)
...
I only worked out what web site to download from ;-)
...>... list longer than one life time to complete...
>
Stephen S
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On 2018-12-17 7:40 p.m., StephenS wrote:
...
> I think I should start with something easier, planetary gears (epicyclic
> gears). Then work my way up to something with more parts.
...30 tooth inside
4 x 10 tooth outside
Comments Welcome:
Stephen S
Post a reply to this message
Attachments:
Download 'gear_test_a.png' (73 KB)
Preview of image 'gear_test_a.png'
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StephenS schrieb:
> Comments Welcome:
The gears would be much more impressive if they were moving.
Regards,
Gregor
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On 18-12-2018 1:43, StephenS wrote:
> On 2018-12-17 2:25 a.m., Thomas de Groot wrote:
> ...
>> An Aztec Calendar is what I would attempt.
>>
>
> The calendar looks like two rings that slide on each other, or am I
> seeing it wrong? Gears in stone?
>
I hate it when I am unable to find back what I am looking for :-/
If I remember well, it consists of three geared wheels, one involute. I
must have a picture somewhere as I intended years ago to make an
animation from it. I keep looking...
--
Thomas
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On 18-12-2018 8:49, Thomas de Groot wrote:
> On 18-12-2018 1:43, StephenS wrote:
>> On 2018-12-17 2:25 a.m., Thomas de Groot wrote:
>> ...
>>> An Aztec Calendar is what I would attempt.
>>>
>>
>> The calendar looks like two rings that slide on each other, or am I
>> seeing it wrong? Gears in stone?
>>
>
> I hate it when I am unable to find back what I am looking for :-/
>
> If I remember well, it consists of three geared wheels, one involute. I
> must have a picture somewhere as I intended years ago to make an
> animation from it. I keep looking...
>
>
This is the sort of construction which I mean:
https://www.youtube.com/watch?v=BPbZNUd3Vy4
https://www.youtube.com/watch?v=qhWItvjk9Yg
--
Thomas
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On 2018-12-18 3:05 a.m., Thomas de Groot wrote:
...
> This is the sort of construction which I mean:
>
> https://www.youtube.com/watch?v=BPbZNUd3Vy4
> https://www.youtube.com/watch?v=qhWItvjk9Yg
>
I like the first one. I would need to make the pictures for it to have
meaning, not my best area for modeling.
Stephen S
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On 18/12/2018 11:02, StephenS wrote:
> On 2018-12-18 3:05 a.m., Thomas de Groot wrote:
> ....
>> This is the sort of construction which I mean:
>>
>> https://www.youtube.com/watch?v=BPbZNUd3Vy4
>> https://www.youtube.com/watch?v=qhWItvjk9Yg
>>
>
> I like the first one.
It looks perfect for what you have done.
> I would need to make the pictures for it to have meaning, not my best area for
modeling.
>
Plagiarize, let no one's work evade your eyes
https://maya.nmai.si.edu/calendar/reading-calendar-glyphs
https://maya.nmai.si.edu/sites/all/themes/mayatime/img/glyph-interactive/glyphs/overlay/b5.jpg
--
Regards
Stephen
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Le 18/12/2018 à 03:08, StephenS a écrit :
> On 2018-12-17 7:40 p.m., StephenS wrote:
> ...
>> I think I should start with something easier, planetary gears
>> (epicyclic gears). Then work my way up to something with more parts.
> ...30 tooth inside
> 4 x 10 tooth outside
>
> Comments Welcome:
>
> Stephen S
Margins are missing.
The head of tooth should not touch the foot of the opposite gear.
The part of teeth which get in contact should follow Euler's work, the
remaining part is irrelevant as long as it does not block the movement.
For less noise, consider a slanted rolling profil along depth (missing
the english word for that), and possibly a mirrored construction like
Citroën.
contact between any two gears should be limited to one pair of teeths,
one tooth per gear. (make teeth smaller).
Spur gear NEED a holding axis artefact.
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Le 18-12-18 à 12:03, Le_Forgeron a écrit :
> Le 18/12/2018 à 03:08, StephenS a écrit :
>> On 2018-12-17 7:40 p.m., StephenS wrote:
>> ...
>>> I think I should start with something easier, planetary gears
>>> (epicyclic gears). Then work my way up to something with more parts.
>> ...30 tooth inside
>> 4 x 10 tooth outside
>>
>> Comments Welcome:
>>
>> Stephen S
>
> Margins are missing.
>
> The head of tooth should not touch the foot of the opposite gear.
>
> The part of teeth which get in contact should follow Euler's work, the
> remaining part is irrelevant as long as it does not block the movement.
>
> For less noise, consider a slanted rolling profil along depth (missing
> the english word for that), and possibly a mirrored construction like
> Citroën.
>
> contact between any two gears should be limited to one pair of teeths,
> one tooth per gear. (make teeth smaller).
>
> Spur gear NEED a holding axis artefact.
>
Slanted in one direction : Helical
Double slant à la Citroën : Chevron
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On 18/12/2018 17:03, Le_Forgeron wrote:
> Le 18/12/2018 à 03:08, StephenS a écrit :
>> On 2018-12-17 7:40 p.m., StephenS wrote:
>> ...
>>> I think I should start with something easier, planetary gears
>>> (epicyclic gears). Then work my way up to something with more parts.
>> ...30 tooth inside
>> 4 x 10 tooth outside
>>
>> Comments Welcome:
>>
>> Stephen S
>
> Margins are missing.
>
> The head of tooth should not touch the foot of the opposite gear.
>
> The part of teeth which get in contact should follow Euler's work, the
> remaining part is irrelevant as long as it does not block the movement.
>
> For less noise, consider a slanted rolling profil along depth (missing
> the english word for that), and possibly a mirrored construction like
> Citroën.
>
> contact between any two gears should be limited to one pair of teeths,
> one tooth per gear. (make teeth smaller).
>
> Spur gear NEED a holding axis artefact.
>
You are right in what you say and the Blacksmith should know. :)
A couple of years ago I was building gear drives in Blender. There is a
lot of theory behind designing the gears. Also the default values on the
page Stephen posted. Gave a result that fitted where they touched. :)
Thinking of the Tri_top Stephen cut and that he has access to a CNC
plasma cutter. I assume the ring gear was a test cut and the gears just
fit together for display.
I think that the sheet metal is too thin to put a slant on it.
But what do I know. I once had a plater pull a hacksaw from my hands. As
he could not stand to watch the way I used it. Yip! I cut on the backstroke.
--
Regards
Stephen
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On 2018-12-19 12:34 p.m., Stephen wrote:
> ... There is a
> lot of theory behind designing the gears.
...More coal, full steam ahead, blast the "theory". We'll make it fit
with a bigger hammer :-)
Stephen S
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On 19/12/2018 23:39, StephenS wrote:
> On 2018-12-19 12:34 p.m., Stephen wrote:
>
>> ... There is a lot of theory behind designing the gears.
> ....More coal, full steam ahead, blast the "theory". We'll make it fit
> with a bigger hammer :-)
>
If it works for you. It works for me.
I’m quite envious of your access to any CNC Machine. I reckon that if
you chrome plated your Triceratops. You could sell it for thousands.
I’ll only take 5% for the idea. ;)
Okay you talked me down to 2.5%. Hand crafted by an artisan, must surely
sell. :)
If I had any money I would ask you to build me one.
--
Regards
Stephen
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hi,
Stephen <mca### [at] aolcom> wrote:
> ...
> I’m quite envious of your access to any CNC Machine. I reckon that if
> you chrome plated your Triceratops. You could sell it for thousands.
> ...
> If I had any money I would ask you to build me one.
so agree, it'd be natty.
StephenS:
looking at "gear_pic_.png" (18 Dec 2018 00:40:38), if you'd bend the rails to
half-circles, I can see a bear trap in the making. :-)
regards, jr.
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On 2018-12-17 7:40 p.m., StephenS wrote:
...
> I think I should start with something easier, planetary gears (epicyclic
> gears). Then work my way up to something with more parts.
>
...
I have about 30 pieces now, half modeled. The gears came out rough and
often catch, more filing needed.
Comments welcome:
Stephen S
Post a reply to this message
Attachments:
Download 'gear_test0000.png' (56 KB)
Download 'gear_test0001.png' (55 KB)
Download 'gear_test0002.png' (56 KB)
Download 'gear_test0003.png' (56 KB)
Download 'planetary_test.png' (521 KB)
Preview of image 'gear_test0000.png'
Preview of image 'gear_test0001.png'
Preview of image 'gear_test0002.png'
Preview of image 'gear_test0003.png'
Preview of image 'planetary_test.png'
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StephenS <nom### [at] nomailcom> wrote:
> I have about 30 pieces now, half modeled. The gears came out rough and
> often catch, more filing needed.
>
> Comments welcome:
Nice! :)
Have you thought about motor-driving them and lapping them with abrasive to
automate the smoothing?
They also use a grease with particulate copper in it for Glocks and other such
items - perhaps a quick electroplating or just dumping the iron parts into a
copper sulfate solution (bluestone) to do a non-galvanic plating via a surface
redox reaction would give you slightly copper-plated gears which might run more
smoothly... or not. ;)
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On 24/12/2018 18:53, Bald Eagle wrote:
> StephenS <nom### [at] nomailcom> wrote:
>
>> I have about 30 pieces now, half modeled. The gears came out rough and
>> often catch, more filing needed.
>>
>> Comments welcome:
>
> Nice! :)
>
> Have you thought about motor-driving them and lapping them with abrasive to
> automate the smoothing?
>
I was going to say that as a joke.
>
> Just put some grinding paste on it and run it until it stops squeeling. ;)
>
>
> They also use a grease with particulate copper in it for Glocks and other such
> items - perhaps a quick electroplating or just dumping the iron parts into a
> copper sulfate solution (bluestone)
Copper sulfate crystals. Ah!
> to do a non-galvanic plating via a surface
> redox reaction would give you slightly copper-plated gears which might run more
> smoothly... or not. ;)
>
Or you could varnish areas beforehand and have an image as an effect.
--
Regards
Stephen
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